package com.cspm.common.util;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 静态获取Bean
 * 
 * @author CHENQUAN
 * 
 * @date 2016年8月31日下午4:14:46
 */
public class SpringContextUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    // 实现
    @Override
    public void setApplicationContext(ApplicationContext applicationContext)
	    throws BeansException {
	SpringContextUtil.applicationContext = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
	return applicationContext;
    }

    public static Object getBean(String name) throws BeansException {
	try {
	    return applicationContext.getBean(name);
	} catch (Exception e) {
	    throw new RuntimeException("获取的Bean不存在！");
	}
    }

    public static <T> T getBean(String name, Class<T> requiredType)
	    throws BeansException {
	return applicationContext.getBean(name, requiredType);
    }

    public static boolean containsBean(String name) {
	return applicationContext.containsBean(name);
    }

    public static boolean isSingleton(String name)
	    throws NoSuchBeanDefinitionException {
	return applicationContext.isSingleton(name);
    }

    public static Class<? extends Object> getType(String name)
	    throws NoSuchBeanDefinitionException {
	return applicationContext.getType(name);
    }

    public static String[] getAliases(String name)
	    throws NoSuchBeanDefinitionException {
	return applicationContext.getAliases(name);
    }

}